Sole-channeling tool.



No. 872,716. PATENTED DEC. s, 190?.

M. 000K, JR. SOLE OHANNELING TOOL.

wi/inessea: livveivior;

MILLER 000K, .13., OF WHITMAN, MASSACHUSETTS.

soLE-cmirnmLmG TOOL.

Specification of Letters Patent.

rammed Dec. 3, 1907.

Application filed May 20.1907. Serial No. 374.600.

To all whom it may concern."

Be it known that I, MILLER Whitman, in the county of Plymouth and Stateof Massachusetts, have invented certain new and useful Improvements inSole- Channeling Tools, of which the following is a specification.

f the sole.

This invention relates to tools or appliances for slitting the edge'ofan inner sole to form a lip adapted to be turned upwardlyfrom the loweror outer surface of the inner sole of a welted shoe.

The invention has especial reference to two-part tools of thischaracter, adapted not only to cut the slit or channel which forms thelip, but also to trim off surplus portions of the lip, especially at theshank The invention has for itsobject to provide a tool embodying two'associated knives, one, which I term the slitting knife, adapted to slitthe edge of the soleto form the lip, while the other, which I term thetrimming knife, is adapted to trim off theouter edge of the lip atportions of the sole where said lip is of maximum width, owing toincreased depth of penetration of the slitting knife into the edge ofthe sole, the tool being characterized by a peculiar construction of thetrimming my invention.

knife, whereby the durability and effectiveness of the latter aregreatly increased, and the cost of the tool as a whole is reduced.

The invention consists in the improvements which I will now proceed todescribe and claim.

Of the accompanying drawings, forming a part of thisspecification,Figure 1 represents a perspective view of a tool embodyingFig. 2 represents a perspective view of the trimming knife. Fig. 3represents a perspective view of the channeling knife. Fig. 4 representsa section on line 44 of Fig. 6. Fig. 5 represents a section on line 55of Fig. 6. Fig. 6 represents a side elevation of the tool, showing indotted lines a portion of an inner sole being acted on thereby. Fig. 7represents a view similar to Fig. 5, showing the efiect of the wear andgrinding onthe blades. All the figures of the drawing are shown on anenlarged scale.

The same letters of reference indicate the same parts in all thefigures.

'The slitting knife is composed of a shank 12, having at one end a thinextension 13 which forms the cutting blade, said blade having twobeveled faces 14 and 15, which COOK, Jr., of

portion of intersect the bottom surface of the blade, and form a sidecutting edge 16 and an end cutting edge 17. The slitting knife thusformed is adapted to enter the edge of an inner sole 18, shown by dottedlines in Fig. 6, and subdivide the edge of the innersole to form theusual feather 19 and lip 20.

The trimming knife is composed of a shank 21 formed to bear on one sideof the shank 12, and a blade-or knife portion 22 bent at right angles tothe shank portion, and

formed to overhang the slitting blade. The said shank and blade areformed by bending a single piece of metal of suitable thickness to formtwo arms of unequal length at right angles with each other, one armconstituting the shank and the other arm the blade. constructionprovides a trimming knife 22 having a maximum strength and providing alarge amount of stock which may be ground down, so that the saidtrimming knife may possess a period of wear and usefulness of as great alength as that 'of the slitting blade. As clearly shown in the drawings,the length of the shorter arm or blade 22, in a direction transverse ofthe slitting knife, exceeds the thickness of the longer arm or shank 21,this being due to the bending at a right angle as described. The loweredge of the shank 21 is cut away to form a recess 23. The blade 22projects below the portion of the shank which is located above therecess 23, the said on its inner side, which intersects the outer sideof the blade, and forms a cutting edge 25 which extends from the shankportion tov the cutting edge 16 of the slitting nife, and is arrangedsubstantially at right angles with said cutting edge 16. blade 22 has aninclined lower end'26, the inclination of which corresponds to that ofthe face 14 of the slitting blade, the end 26 bearing closely upon theface 14, as shown in Figs. 1 and 5.

It will be seen, by reference to Fig. 4, that the distance between thecutting edge and the heel or back of the trimming blade 22 issubstantially equal to the distance between the cutting edge 16 and theheel or back of the slitting blade, hence the trimming blade is adaptedto be reduced, by grinding, to the same extent that the slittin blade isadapted to be reduced. This resu t is due to the bending of the trimmingblade to a osition at right angles to its shank, so that t e trinimingblade iscaused to overhang the slitting The trimming blade,and is givena width practically equal to that of the slitting blade, so that the twoblades have a ractically equal period of wear and usefuliiess.

Fig. 7 shows the condition of the blades after they have beenconsiderably reduced by wear and grinding. It will be seen that therecession of the cutting edge 16 of the slitting blade by grindinginvolves a downward movement of the trimming blade, in order thatthelower end of its cutting edge may meet the cutting edge 16 of theslitting blade. This adjustment is provided for by connecting the shanksof the two blades by means of a single pivot screw 28, which permits theshank of the trimming blade to swing sufficiently to depress the saidtrimming blade from time to time, and keep thelower end of its cuttingedge in contact with the slitting blade. of the screw 28 from raisingthe trimming blade, I prefer to make said. screw with a left-handthread, so that when it is tightened, it will be rotated in suchdirection that its frictional contact with the shank of the trimmingblade will tend to force the trimming blade downwardly against theslitting blade.

The shanks 12 and 21 are provided respectively. with longitudinal slots30 31 which receive the screws'attaching the tool to the frame of themachine, said slots per-- mitting longitudinal adjustment of the knives.The shank 21 of the trimming knife has a longitudinal slot 32 throughwhich the screw 28 passes, said slot permitting independent adjustmentsof the two knives to maintain the desired distance betweenthe To preventthe rotation said blade overhanging the slitting blade,

.and having a cutting edge substantially at right angles with thecutting edge of the slitting b ade, the length of the shorter arm in adirection transverse of the slitting knife exceeding the thickness ofthe longer 'arm or shank, the said shanks being adjustably connected topermit an adjustment of the trimming blade toward the slitting blade.

2. In a sole-channeling tool, in combination, a slitting knife composedof a shank and a thin blade extension at one end of the shank providedwith a beveled face 14, which intersects the bottom surface of theblade, and forms a cutting edge, and a trimmin knife composed of twoarms of unequa length, arranged substantially at right angles with eachother, the longer arm constituting the shank, and the shorter arm theblade of the trimming knife, said blade overhanging the slitting blade,and having a cutting edge substantially at right angles with thecuttingedge of the slitting blade, and an inclined lower end whichconforms to the beveled face of the slitting blade, the length of theshorter arm in a direction transverse of the slitting knife exceedingthe thickness of the longer arm or shank, the shanks of the two knivesbeing adjustably connected to permit an adjustment of the trimming bladetoward the slitting blade.

3. A sole channeling tool comprisin a slitting knife composed of a shankand a t '11 extension formed as a blade at one end of the shank, and atrimming knife composed of two arms bent substantially at right angleswith each other and forming a shank and a blade, and formed with arecess adjacent to the angle of the two arms, one of said arms extendingtransverse of the slitting knife, the

cutting edges of the twoknives being substantially flush with eachother.

In testimony whereof I have aflixed my signature, in presence of twowitnesses.

. MILLER COOK, JR. Witnesses: E. BATCHELDER,

ARTHUR H. BROWN.

